2012 BMW 640 review
See also:
Sound output
Switching on/off
When the ignition is switched off: press ON/OFF
button on the radio.
Muting
When the ignition is switched on or the engine
is running: press the ON/OFF button on the
radio. ...
Intelligent use of advanced light technology
The optional High-Beam Assistant for the new BMW 3-Series Sedan provides
enhanced safety at night. The system automatically switches high beam on and
off, as conditions require, ensuring that the ...
Switching the microphone to mute
When a call is active, the microphone can be
muted.
1. "Telephone".
2. "Active calls".
3. "Microphone mute"
A microphone that has been switched to mute
is automa ...
